When former Chicago Cub and longtime scout Lennie Merullo was invited back to Wrigley Field in 1969 to participate in an oldtimers game, this is the uniform he was given— even though he never actually wore No. 3 for the Cubs.. A No. 21 uniform was provided for him in 1999 when he joined our Oldtime Baseball Game as a coach (See: 1941 Chicago Cubs), but he chose to wear his No. 3 uniform. He continued to wear the No. 3 uniform in the Oldtime Baseball Game every year from 1999 through 2009.

Hall of Fame shortstop Luis Aparicio played 10 of his 18 seasons with the Chicago White Sox, winding up his career in Boston. He led the American League in stolen bases in each of his first nine seasons.

The 1969 Miracle Mets shocked the Baltimore Orioles in the World Series for the their first championship. Hall of Famer Tom Seaver, who won 25 games for the ’69 Mets, closed out his career with the Red Sox in 1986.

The expansion Seattle Pilots played only one season, relocating to Milwaukee in 1970 and becoming the Brewers. Tommy Harper, who stole a whopping 73 bases for the Pilots in 1969, went on to play and coach for the Red Sox. He settled in the Boston area after retiring.

This is an actual road uniform worn in the big leagues by Newton, Mass., native Jim Corsi, who pitched for his hometown Red Sox from 1997 to 1999. Corsi pitched 10 seasons in the big leagues and was a member of the 1989 World Series champion Oakland A’s. After his career ended, Corsi became the first former Red Sox player to play in the Oldtime Baseball Game, making appearances in 2002 and ’03.

The original Boston Giants were an early Negro Leagues baseball team founded at the turn of the century as the Dartmouth Athletic Giants. Mostly a semipro team that served as a sort of minor-league team for better-known Negro Leagues teams elsewhere in the country, several incarnations came and went from the 1920’s to the 1940’s. They were variously known as the Boston Royal Giants and Boston Colored Giants and played home games at such venues as Carter Field and Lincoln Park in the South End, at Dorchester’s Town Field and, in Cambridge, Russell Field and Hoyt Field.

On March 3, 2015, the Red Sox and Boston College played an exhibition game at JetBlue Park in Fort Myers, Fla., in honor of Pete Frates, the former BC baseball captain who was battling ALS. What made this game special is that players on both teams wore No. 3 jerseys, after which they were auctioned off to benefit ALS research.

The House of David was a barnstorming team that toured the country from the 1920’s to the 1950’s. House of David players were known for their long beards. Though they mostly were amateur players, future Hall of Famers Grover Cleveland Alexander and Satchel Paige had hitches with the House of David, as did Eddie Popowski, who would later be the third-base coach of the 1967 “Impossible Dream” Red Sox.